/*
Binary_log_event* Binary_log_driver::parse_event(boost::asio::streambuf
&sbuff, Log_event_header
*header)
*/
Binary_log_event* Binary_log_driver::parse_event(std::istream &is,
Log_event_header *header)
{
Binary_log_event *parsed_event= 0;
switch (header->type_code) {
case TABLE_MAP_EVENT:
parsed_event= proto_table_map_event(is, header);
break;
case QUERY_EVENT:
parsed_event= proto_query_event(is, header);
break;
case INCIDENT_EVENT:
parsed_event= proto_incident_event(is, header);
break;
case WRITE_ROWS_EVENT:
case UPDATE_ROWS_EVENT:
case DELETE_ROWS_EVENT:
case WRITE_ROWS_EVENTv2:
case UPDATE_ROWS_EVENTv2:
case DELETE_ROWS_EVENTv2:
parsed_event= proto_rows_event(is, header, m_format_desc_event);
break;
case ROTATE_EVENT:
{
Rotate_event *rot= proto_rotate_event(is, header);
m_binlog_file_name= rot->binlog_file;
m_binlog_offset= (unsigned long)rot->binlog_pos;
parsed_event= rot;
}
break;
case INTVAR_EVENT:
parsed_event= proto_intvar_event(is, header);
break;
case USER_VAR_EVENT:
parsed_event= proto_uservar_event(is, header);
break;
case FORMAT_DESCRIPTION_EVENT:
parsed_event = proto_desc_event(is, header);
break;
case ROWS_QUERY_EVENT:
parsed_event = proto_rows_query_event(is, header);
break;
default:
{
// Create a dummy driver.
parsed_event= new Binary_log_event(header);
}
}
return parsed_event;
}
/*
Binary_log_event* Binary_log_driver::parse_event(boost::asio::streambuf
&sbuff, Log_event_header
*header)
*/
Binary_log_event* Binary_log_driver::parse_event(std::istream &is,
Log_event_header *header)
{
Binary_log_event *parsed_event= 0;
boost::uint32_t event_length= header->event_length;
if (m_checksum_alg == BINLOG_CHECKSUM_ALG_CRC32) {
event_length -= CHECKSUM_CRC32_SIGNATURE_LEN;
}
switch (header->type_code) {
case TABLE_MAP_EVENT:
parsed_event= proto_table_map_event(is, header, event_length);
break;
case QUERY_EVENT:
parsed_event= proto_query_event(is, header, event_length);
break;
case INCIDENT_EVENT:
parsed_event= proto_incident_event(is, header, event_length);
break;
case WRITE_ROWS_EVENT:
case UPDATE_ROWS_EVENT:
case DELETE_ROWS_EVENT:
parsed_event= proto_rows_event(is, header, event_length);
break;
case ROTATE_EVENT:
{
Rotate_event *rot= proto_rotate_event(is, header, event_length);
m_binlog_file_name= rot->binlog_file;
m_binlog_offset= (unsigned long)rot->binlog_pos;
parsed_event= rot;
}
break;
case INTVAR_EVENT:
parsed_event= proto_intvar_event(is, header, event_length);
break;
case USER_VAR_EVENT:
parsed_event= proto_uservar_event(is, header, event_length);
break;
case FORMAT_DESCRIPTION_EVENT:
{
std::string buf;
// The length of the payload is unknown until we get the common header
// length which is stored in the stream itself. So, read the stream to
// the location where the common header length is stored.
boost::uint32_t len = ST_COMMON_HEADER_LEN_OFFSET + 1;
for (int i=0; i< len; i++)
{
char ch;
is.get(ch);
buf.push_back(ch);
if (i == ST_COMMON_HEADER_LEN_OFFSET) {
int common_header_len = ch;
// Now we know the correct payload size. update the length.
len = header->event_length - common_header_len;
}
}
is.seekg(-len, is.cur);
m_checksum_alg= get_checksum_alg(buf.data(), len);
parsed_event= new Binary_log_event(header);
}
break;
default:
{
// Create a dummy driver.
parsed_event= new Binary_log_event(header);
}
}
return parsed_event;
}
